Intraosseous infusion device

Abstract

An intraosseous infusion device includes a base and an upper frame mounted to the base. An elongated needle is fixed to the upper frame. A fitting is provided for receiving liquid to be delivered to a patient's bone marrow and for supplying the liquid to a bore in the needle. The base includes a cam surface and the upper frame includes a cam follower. The cam surface is configured to cause the upper frame to rotate relative to the base as the needle moves longitudinally between a retracted position within the base and an extended position below the base.

I claim: 
     
       1. An intraosseous infusion device for delivering a liquid to the bone marrow of a patient's bone, the device comprising: a base having a lower surface configured for placement against the skin of the patient, adjacent to the patient's bone, wherein an opening extends through the base, emerging in its lower surface;   an upper frame mounted to the base;   an elongated needle having a lower end, an upper end and a bore extending therebetween, the lower end of the needle having a tip suitable for puncturing the patient's skin and a port communicating with the bore of the needle, the upper end of the needle fixedly mounted to the upper frame; and   a fitting for receiving liquid to be delivered to the patient's bone marrow and for supplying the liquid to the bore at the upper end of the needle;   wherein one of the base and the upper frame has a cam surface and the other of the base and the upper frame has a cam follower that engages the cam surface, the cam surface and the cam follower disposed relative to each other such that the upper frame is movable in a longitudinal direction between a retracted position wherein the needle tip does not extend below the lower surface of the base and an extended position wherein the needle tip does extend below the lower surface of the base; and   wherein the cam surface is configured to cause the upper frame to rotate relative to the base as the upper frame moves longitudinally between the retracted and extended positions.   
     
     
       2. The intraosseous infusion device of claim wherein the upper frame defines a passageway having an upper end and a lower end, the upper end of the passageway fluidically connected to the fitting and the lower end of the passageway fluidically connected to the bore of the needle. 
     
     
       3. The intraosseous infusion device of claim wherein the needle rotates approximately 45 degrees relative to the base as the upper frame moves between the retracted and extended positions. 
     
     
       4. The intraosseous infusion device of claim wherein the cam surface includes an upper cam lockout for maintaining the upper frame in the retracted position. 
     
     
       5. The intraosseous infusion device of claim wherein the cam surface includes a lower cam lockout for maintaining the upper frame in the extended position. 
     
     
       6. The intraosseous infusion device of claim wherein the cam surface includes an upper cam lockout for maintaining the upper frame in the retracted position and a lower cam lockout for maintaining the upper frame in the extended position. 
     
     
       7. An intraosseous infusion device for delivering a liquid to the bone marrow of a patient's bone, the device comprising; an elongated needle having a lower end, an upper end and a bore extending therebetween, the lower end of the needle having a tip suitable for puncturing the patient's skin and a port communicating with the bore of the needle;   a substantially tubular base having an upper portion, a lower portion and a traversely extending needle guide between the upper and lower portions, the needle guide having a centrally located opening for closely receiving the elongated needle, the lower portion having a lower surface for placement against the skin of the patient;   a tubular upper frame mounted to the base, the upper frame having a traversely extending needle mount for holding the upper end of the needle, the needle mount defining a passageway for receiving liquid to be delivered to the patient's bone marrow and for supplying the liquid to the bore of the needle;   wherein the upper end of the tubular base has a cam surface and the tubular upper frame has a cam follower that engages the cam surface, the cam surface and the cam follower disposed relative to each other such that the tubular upper frame is movable in a longitudinal direction between a retracted position wherein the needle tip does not extend below the lower surface of the base and an extended position wherein the needle tip does extend below the lower surface of the base; and   wherein the cam surface is configured to cause the tubular upper frame to rotate relative to the base as the tubular upper frame moves longitudinally between the retracted and extended positions.   
     
     
       8. The intraosseous infusion device of claim 7, wherein the upper portion of the base has an upper surface that is in contact with the needle mount when the tubular upper frame is in a fully extended position. 
     
     
       9. The intraosseous infusion device of claim 7, wherein a spring is disposed between the needle guide and the needle mount for urging the tubular upper frame to its retracted position. 
     
     
       10. The intraosseous infusion device of claim 7, wherein the needle mount includes a window port. 
     
     
       11. The intraosseous infusion device of claim 7, wherein the lower portion of the tubular base includes a plurality of suture hooks.